Reduction of estimation errors, saving both time and money Instant measurement with one-button operation Easy addition and subtraction function The most advanced laser technology for distance measurement Simple one-button operation to instantly measure distance between two objects Measures up to 50 m (165 ft) with accuracy of 2 mm (0.08 in) Bright laser for easy targeting even at longer distances Quick calculation of area (square feet/meters) and volume Easy addition and subtraction function Pythagoras function indirectly measures height via two other measurements Stores up to five measurement results Battery life of 3000 measurements with automatic shut-off feature Two-line display with display hold (until next button is pressed) Carrying pouch secures to your tool belt Powered by two AAA batteries